Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Has the vehicle been checked for diagnostic trouble codes (DTCs)? | -- | Go to Step 2 | Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.1L (LG8) or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L |
2 | Are both the speedometer and HUD inoperative? | -- | Go to Step 3 | Go to Step 5 |
3 |
Does the scan tool display the correct speed? | -- | Go to Step 4 | Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.1L (LG8) or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L |
4 | Repair circuit 389 for an open, a short to ground, or a short to B+. Is the repair complete? | -- | System OK | -- |
5 | Does the speedometer display the correct speed? | -- | Go to Step 6 | Go to Step 9 |
6 |
Are there any opens, a short to ground, a short to voltage, or high resistance in circuit 389? | -- | Go to Step 7 | Go to Step 8 |
7 | Repair circuit 389. Is the repair complete? | -- | System OK | -- |
8 | Replace the HUD. Refer to Head Up Display Module Replacement . Is the repair complete? | -- | System OK | -- |
9 |
Are there any opens, a short to ground, a short to voltage, or high resistance in circuit 389? | -- | Go to Step 10 | Go to Step 11 |
10 | Repair circuit 389. Is the repair complete? | -- | System OK | -- |
11 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | System OK | -- |
